Shifty-looking informal compound adjective
If you describe someone as shifty-looking, they seem dishonest, untrustworthy, or suspicious.
There was a shifty-looking man who hastily left the burning house.
The more John explains, the more shifty-looking he is.
Someone shifty-looking has been hanging around the town these days.
Refer to slightly improper behavior or sexual activity between couples but it's not too serious
Used for saying that there is something suspicious or wrong
To be extremely skeptical of someone
Used to indicate a dubious, suspicious, or potentially immoral or illegal past history.
To distrust someone.